java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:41:22,363 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:41:22,365 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:41:22,383 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:41:22,383 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:41:22,385 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:41:22,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:41:22,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:41:22,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:41:22,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:41:22,396 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:41:22,396 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:41:22,397 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:41:22,398 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:41:22,406 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:41:22,407 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:41:22,411 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:41:22,413 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:41:22,417 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:41:22,422 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:41:22,423 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:41:22,425 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:41:22,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:41:22,431 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:41:22,431 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:41:22,433 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:41:22,434 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:41:22,435 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:41:22,438 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:41:22,441 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:41:22,441 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:41:22,442 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:41:22,442 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:41:22,443 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:41:22,445 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:41:22,445 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:41:22,447 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 11:41:22,467 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:41:22,468 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:41:22,469 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:41:22,469 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:41:22,469 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:41:22,469 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:41:22,470 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:41:22,470 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:41:22,470 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:41:22,470 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:41:22,470 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:41:22,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:41:22,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:41:22,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:41:22,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:41:22,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:41:22,472 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:41:22,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:41:22,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:41:22,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:41:22,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:41:22,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:41:22,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:41:22,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:41:22,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:41:22,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:41:22,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:41:22,474 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:41:22,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:41:22,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:41:22,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:41:22,475 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:41:22,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:41:22,531 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:41:22,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:41:22,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:41:22,553 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:41:22,554 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:41:22,555 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-09-10 11:41:22,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e797403a0/cb23a15fd0d2465aaec6fc41bd818bdc/FLAG4b1e4b032 [2018-09-10 11:41:23,405 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:41:23,406 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-09-10 11:41:23,444 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e797403a0/cb23a15fd0d2465aaec6fc41bd818bdc/FLAG4b1e4b032 [2018-09-10 11:41:23,466 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e797403a0/cb23a15fd0d2465aaec6fc41bd818bdc [2018-09-10 11:41:23,479 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:41:23,483 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:41:23,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:41:23,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:41:23,494 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:41:23,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:41:23" (1/1) ... [2018-09-10 11:41:23,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec3b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:23, skipping insertion in model container [2018-09-10 11:41:23,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:41:23" (1/1) ... [2018-09-10 11:41:23,844 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:41:24,914 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:41:24,940 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:41:25,604 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:41:25,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25 WrapperNode [2018-09-10 11:41:25,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:41:25,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:41:25,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:41:25,854 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:41:25,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:25,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:41:26,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:41:26,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:41:26,100 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:41:26,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... [2018-09-10 11:41:26,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:41:26,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:41:26,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:41:26,950 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:41:26,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:41:27,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:41:27,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:41:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:41:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 11:41:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:41:27,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-10 11:41:27,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:41:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:41:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:41:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-10 11:41:27,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:41:27,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:41:27,027 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:41:27,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 11:41:40,043 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:41:40,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:41:40 BoogieIcfgContainer [2018-09-10 11:41:40,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:41:40,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:41:40,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:41:40,048 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:41:40,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:41:23" (1/3) ... [2018-09-10 11:41:40,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:41:40, skipping insertion in model container [2018-09-10 11:41:40,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:41:25" (2/3) ... [2018-09-10 11:41:40,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136787a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:41:40, skipping insertion in model container [2018-09-10 11:41:40,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:41:40" (3/3) ... [2018-09-10 11:41:40,052 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label01_true-unreach-call.c [2018-09-10 11:41:40,062 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:41:40,072 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:41:40,133 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:41:40,133 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:41:40,133 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:41:40,133 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:41:40,134 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:41:40,134 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:41:40,134 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:41:40,134 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:41:40,134 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:41:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:41:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-10 11:41:40,191 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:40,192 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:41:40,193 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:40,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1867827108, now seen corresponding path program 1 times [2018-09-10 11:41:40,200 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:40,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:40,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:40,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:40,248 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:40,654 WARN L175 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:41:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:40,739 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:41:40,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:41:40,739 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:41:40,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:41:40,762 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:41:40,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:40,766 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:41:49,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:41:49,090 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:41:49,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:41:49,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-09-10 11:41:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:41:49,127 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:41:49,127 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:41:49,138 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:41:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:41:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:41:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:41:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-10 11:41:49,313 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 54 [2018-09-10 11:41:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:41:49,314 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-10 11:41:49,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:41:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-10 11:41:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-10 11:41:49,322 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:41:49,322 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:41:49,322 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:41:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1635308534, now seen corresponding path program 1 times [2018-09-10 11:41:49,323 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:41:49,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:49,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:41:49,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:41:49,325 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:41:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:41:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:41:49,665 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:41:49,665 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:41:49,665 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:41:49,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:41:49,668 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:41:49,668 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:41:49,668 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-09-10 11:42:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:05,691 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-09-10 11:42:05,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:42:05,703 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-09-10 11:42:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:05,741 INFO L225 Difference]: With dead ends: 6329 [2018-09-10 11:42:05,741 INFO L226 Difference]: Without dead ends: 4731 [2018-09-10 11:42:05,751 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:42:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-09-10 11:42:05,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-09-10 11:42:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-09-10 11:42:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-09-10 11:42:05,914 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 128 [2018-09-10 11:42:05,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:05,915 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-09-10 11:42:05,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:42:05,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-09-10 11:42:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-10 11:42:05,927 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:05,928 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:05,928 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:05,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1623897702, now seen corresponding path program 1 times [2018-09-10 11:42:05,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:05,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:05,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:05,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:05,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:06,090 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:42:06,090 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:42:06,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:42:06,091 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:42:06,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:42:06,091 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:42:06,092 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:42:06,092 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 4 states. [2018-09-10 11:42:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:16,130 INFO L93 Difference]: Finished difference Result 18600 states and 30799 transitions. [2018-09-10 11:42:16,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:42:16,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-09-10 11:42:16,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:16,218 INFO L225 Difference]: With dead ends: 18600 [2018-09-10 11:42:16,218 INFO L226 Difference]: Without dead ends: 13904 [2018-09-10 11:42:16,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:42:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13904 states. [2018-09-10 11:42:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13904 to 13904. [2018-09-10 11:42:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13904 states. [2018-09-10 11:42:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13904 states to 13904 states and 21848 transitions. [2018-09-10 11:42:16,617 INFO L78 Accepts]: Start accepts. Automaton has 13904 states and 21848 transitions. Word has length 130 [2018-09-10 11:42:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:16,618 INFO L480 AbstractCegarLoop]: Abstraction has 13904 states and 21848 transitions. [2018-09-10 11:42:16,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:42:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 13904 states and 21848 transitions. [2018-09-10 11:42:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-10 11:42:16,625 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:16,626 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:16,626 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:16,626 INFO L82 PathProgramCache]: Analyzing trace with hash 70693426, now seen corresponding path program 1 times [2018-09-10 11:42:16,626 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:16,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:16,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:16,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:16,628 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:16,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:42:16,993 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:42:16,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:42:16,994 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:42:16,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:42:16,995 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:42:16,995 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:42:16,995 INFO L87 Difference]: Start difference. First operand 13904 states and 21848 transitions. Second operand 5 states. [2018-09-10 11:42:30,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:30,429 INFO L93 Difference]: Finished difference Result 42187 states and 69084 transitions. [2018-09-10 11:42:30,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:42:30,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-09-10 11:42:30,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:30,560 INFO L225 Difference]: With dead ends: 42187 [2018-09-10 11:42:30,560 INFO L226 Difference]: Without dead ends: 28289 [2018-09-10 11:42:30,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:42:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28289 states. [2018-09-10 11:42:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28289 to 28109. [2018-09-10 11:42:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28109 states. [2018-09-10 11:42:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28109 states to 28109 states and 42297 transitions. [2018-09-10 11:42:31,305 INFO L78 Accepts]: Start accepts. Automaton has 28109 states and 42297 transitions. Word has length 140 [2018-09-10 11:42:31,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:31,305 INFO L480 AbstractCegarLoop]: Abstraction has 28109 states and 42297 transitions. [2018-09-10 11:42:31,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:42:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 28109 states and 42297 transitions. [2018-09-10 11:42:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-09-10 11:42:31,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:31,325 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:31,325 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1137319749, now seen corresponding path program 1 times [2018-09-10 11:42:31,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:31,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:31,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:31,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:31,327 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:31,602 WARN L175 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:42:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:42:32,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:32,032 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:32,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:32,052 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:32,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 11:42:32,798 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:42:33,919 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:42:33,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:42:33,919 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:42:33,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:42:33,920 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:42:33,920 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:42:33,921 INFO L87 Difference]: Start difference. First operand 28109 states and 42297 transitions. Second operand 5 states. [2018-09-10 11:42:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:42:51,219 INFO L93 Difference]: Finished difference Result 59723 states and 92277 transitions. [2018-09-10 11:42:51,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:42:51,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-09-10 11:42:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:42:51,680 INFO L225 Difference]: With dead ends: 59723 [2018-09-10 11:42:51,680 INFO L226 Difference]: Without dead ends: 31620 [2018-09-10 11:42:51,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 492 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:42:51,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31620 states. [2018-09-10 11:42:52,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31620 to 31490. [2018-09-10 11:42:52,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31490 states. [2018-09-10 11:42:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31490 states to 31490 states and 46217 transitions. [2018-09-10 11:42:52,570 INFO L78 Accepts]: Start accepts. Automaton has 31490 states and 46217 transitions. Word has length 249 [2018-09-10 11:42:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:42:52,570 INFO L480 AbstractCegarLoop]: Abstraction has 31490 states and 46217 transitions. [2018-09-10 11:42:52,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:42:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 31490 states and 46217 transitions. [2018-09-10 11:42:52,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-09-10 11:42:52,587 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:42:52,587 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:42:52,587 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:42:52,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1043393693, now seen corresponding path program 1 times [2018-09-10 11:42:52,588 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:42:52,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:52,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:52,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:42:52,589 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:42:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:52,949 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:42:53,375 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:42:53,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:42:53,375 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:42:53,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:42:53,389 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:42:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:42:53,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:42:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-10 11:42:53,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:42:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 94 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:42:54,071 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:42:54,072 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:42:54,072 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:42:54,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:42:54,073 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:42:54,073 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:42:54,074 INFO L87 Difference]: Start difference. First operand 31490 states and 46217 transitions. Second operand 5 states. [2018-09-10 11:43:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:02,586 INFO L93 Difference]: Finished difference Result 72869 states and 110888 transitions. [2018-09-10 11:43:02,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:43:02,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2018-09-10 11:43:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:02,712 INFO L225 Difference]: With dead ends: 72869 [2018-09-10 11:43:02,713 INFO L226 Difference]: Without dead ends: 41385 [2018-09-10 11:43:02,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 517 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:43:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41385 states. [2018-09-10 11:43:03,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41385 to 41209. [2018-09-10 11:43:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41209 states. [2018-09-10 11:43:03,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41209 states to 41209 states and 51984 transitions. [2018-09-10 11:43:03,499 INFO L78 Accepts]: Start accepts. Automaton has 41209 states and 51984 transitions. Word has length 261 [2018-09-10 11:43:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:03,500 INFO L480 AbstractCegarLoop]: Abstraction has 41209 states and 51984 transitions. [2018-09-10 11:43:03,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:43:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 41209 states and 51984 transitions. [2018-09-10 11:43:03,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-09-10 11:43:03,530 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:03,530 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:03,530 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:03,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1124561779, now seen corresponding path program 1 times [2018-09-10 11:43:03,531 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:03,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:03,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:03,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:03,532 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 141 proven. 155 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-10 11:43:03,774 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:03,774 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:03,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:03,782 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:03,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-09-10 11:43:04,025 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 141 proven. 155 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-09-10 11:43:04,485 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:43:04,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-10 11:43:04,485 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:04,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:43:04,486 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:43:04,486 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:43:04,487 INFO L87 Difference]: Start difference. First operand 41209 states and 51984 transitions. Second operand 5 states. [2018-09-10 11:43:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:16,475 INFO L93 Difference]: Finished difference Result 125340 states and 164026 transitions. [2018-09-10 11:43:16,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:43:16,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 323 [2018-09-10 11:43:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:16,713 INFO L225 Difference]: With dead ends: 125340 [2018-09-10 11:43:16,713 INFO L226 Difference]: Without dead ends: 84137 [2018-09-10 11:43:16,818 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:43:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84137 states. [2018-09-10 11:43:18,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84137 to 83703. [2018-09-10 11:43:18,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83703 states. [2018-09-10 11:43:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83703 states to 83703 states and 103273 transitions. [2018-09-10 11:43:18,617 INFO L78 Accepts]: Start accepts. Automaton has 83703 states and 103273 transitions. Word has length 323 [2018-09-10 11:43:18,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:18,618 INFO L480 AbstractCegarLoop]: Abstraction has 83703 states and 103273 transitions. [2018-09-10 11:43:18,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:43:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 83703 states and 103273 transitions. [2018-09-10 11:43:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-09-10 11:43:18,648 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:18,649 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:18,649 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:18,649 INFO L82 PathProgramCache]: Analyzing trace with hash -174495855, now seen corresponding path program 1 times [2018-09-10 11:43:18,649 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:18,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:18,650 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:18,994 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-09-10 11:43:18,995 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:43:18,995 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:43:18,995 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:18,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:43:18,996 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:43:18,996 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:18,996 INFO L87 Difference]: Start difference. First operand 83703 states and 103273 transitions. Second operand 3 states. [2018-09-10 11:43:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:25,529 INFO L93 Difference]: Finished difference Result 188278 states and 239678 transitions. [2018-09-10 11:43:25,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:43:25,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 363 [2018-09-10 11:43:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:25,891 INFO L225 Difference]: With dead ends: 188278 [2018-09-10 11:43:25,891 INFO L226 Difference]: Without dead ends: 104581 [2018-09-10 11:43:26,877 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:43:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104581 states. [2018-09-10 11:43:28,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104581 to 100705. [2018-09-10 11:43:28,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100705 states. [2018-09-10 11:43:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100705 states to 100705 states and 125149 transitions. [2018-09-10 11:43:28,474 INFO L78 Accepts]: Start accepts. Automaton has 100705 states and 125149 transitions. Word has length 363 [2018-09-10 11:43:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:28,475 INFO L480 AbstractCegarLoop]: Abstraction has 100705 states and 125149 transitions. [2018-09-10 11:43:28,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:43:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 100705 states and 125149 transitions. [2018-09-10 11:43:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-09-10 11:43:28,553 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:28,554 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:28,554 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:28,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1651453806, now seen corresponding path program 1 times [2018-09-10 11:43:28,555 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:28,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:28,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:28,556 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:29,684 WARN L175 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2018-09-10 11:43:29,878 WARN L175 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-09-10 11:43:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:43:32,187 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:32,187 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:32,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:32,195 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:32,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-09-10 11:43:32,967 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 141 proven. 213 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:43:34,591 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:43:34,592 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 5] total 18 [2018-09-10 11:43:34,592 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:43:34,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:43:34,593 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:43:34,593 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:43:34,594 INFO L87 Difference]: Start difference. First operand 100705 states and 125149 transitions. Second operand 5 states. [2018-09-10 11:43:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:43:45,938 INFO L93 Difference]: Finished difference Result 216075 states and 270162 transitions. [2018-09-10 11:43:45,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 11:43:45,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 546 [2018-09-10 11:43:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:43:46,195 INFO L225 Difference]: With dead ends: 216075 [2018-09-10 11:43:46,195 INFO L226 Difference]: Without dead ends: 113884 [2018-09-10 11:43:46,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1087 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-09-10 11:43:46,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113884 states. [2018-09-10 11:43:48,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113884 to 111840. [2018-09-10 11:43:48,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111840 states. [2018-09-10 11:43:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111840 states to 111840 states and 138583 transitions. [2018-09-10 11:43:48,659 INFO L78 Accepts]: Start accepts. Automaton has 111840 states and 138583 transitions. Word has length 546 [2018-09-10 11:43:48,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:43:48,660 INFO L480 AbstractCegarLoop]: Abstraction has 111840 states and 138583 transitions. [2018-09-10 11:43:48,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:43:48,660 INFO L276 IsEmpty]: Start isEmpty. Operand 111840 states and 138583 transitions. [2018-09-10 11:43:48,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-09-10 11:43:48,719 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:43:48,719 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:43:48,720 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:43:48,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1097723088, now seen corresponding path program 1 times [2018-09-10 11:43:48,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:43:48,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:48,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:48,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:43:48,721 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:43:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:49,320 WARN L175 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 11:43:49,522 WARN L175 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-10 11:43:49,743 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 11:43:51,503 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 272 proven. 355 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:43:51,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:51,503 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:43:51,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:51,511 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:51,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 502 proven. 39 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-09-10 11:43:52,507 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 203 proven. 424 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:43:53,719 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:43:53,719 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:43:53,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:43:53,736 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:43:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:43:54,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:43:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 502 proven. 39 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-09-10 11:43:54,858 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:43:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 203 proven. 424 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-09-10 11:43:56,141 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:43:56,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9, 9, 9] total 21 [2018-09-10 11:43:56,142 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:43:56,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:43:56,144 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:43:56,144 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2018-09-10 11:43:56,144 INFO L87 Difference]: Start difference. First operand 111840 states and 138583 transitions. Second operand 16 states. [2018-09-10 11:44:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:37,928 INFO L93 Difference]: Finished difference Result 233306 states and 289862 transitions. [2018-09-10 11:44:37,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-10 11:44:37,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 622 [2018-09-10 11:44:37,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:38,225 INFO L225 Difference]: With dead ends: 233306 [2018-09-10 11:44:38,226 INFO L226 Difference]: Without dead ends: 120410 [2018-09-10 11:44:38,370 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2565 GetRequests, 2507 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=709, Invalid=2153, Unknown=0, NotChecked=0, Total=2862 [2018-09-10 11:44:38,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120410 states. [2018-09-10 11:44:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120410 to 114631. [2018-09-10 11:44:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114631 states. [2018-09-10 11:44:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114631 states to 114631 states and 139949 transitions. [2018-09-10 11:44:40,185 INFO L78 Accepts]: Start accepts. Automaton has 114631 states and 139949 transitions. Word has length 622 [2018-09-10 11:44:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:44:40,185 INFO L480 AbstractCegarLoop]: Abstraction has 114631 states and 139949 transitions. [2018-09-10 11:44:40,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 11:44:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 114631 states and 139949 transitions. [2018-09-10 11:44:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-09-10 11:44:40,240 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:44:40,240 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:44:40,241 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:44:40,241 INFO L82 PathProgramCache]: Analyzing trace with hash 67636915, now seen corresponding path program 1 times [2018-09-10 11:44:40,241 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:44:40,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:40,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:40,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:44:40,242 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:44:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:40,908 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 347 proven. 73 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-09-10 11:44:40,908 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:44:40,908 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:44:40,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:40,919 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:44:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:41,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:44:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 603 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-09-10 11:44:41,764 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:44:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 347 proven. 73 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-09-10 11:44:42,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:44:42,687 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:44:42,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:44:42,702 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:44:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:44:43,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:44:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 603 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-09-10 11:44:43,519 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:44:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 347 proven. 73 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-09-10 11:44:43,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:44:43,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 11 [2018-09-10 11:44:43,948 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:44:43,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 11:44:43,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 11:44:43,950 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:44:43,950 INFO L87 Difference]: Start difference. First operand 114631 states and 139949 transitions. Second operand 8 states. [2018-09-10 11:44:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:44:59,419 INFO L93 Difference]: Finished difference Result 248239 states and 311952 transitions. [2018-09-10 11:44:59,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 11:44:59,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 637 [2018-09-10 11:44:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:44:59,756 INFO L225 Difference]: With dead ends: 248239 [2018-09-10 11:44:59,756 INFO L226 Difference]: Without dead ends: 134382 [2018-09-10 11:44:59,930 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2569 GetRequests, 2547 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:45:00,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134382 states. [2018-09-10 11:45:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134382 to 133384. [2018-09-10 11:45:01,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133384 states. [2018-09-10 11:45:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133384 states to 133384 states and 162891 transitions. [2018-09-10 11:45:02,080 INFO L78 Accepts]: Start accepts. Automaton has 133384 states and 162891 transitions. Word has length 637 [2018-09-10 11:45:02,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:45:02,081 INFO L480 AbstractCegarLoop]: Abstraction has 133384 states and 162891 transitions. [2018-09-10 11:45:02,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 11:45:02,081 INFO L276 IsEmpty]: Start isEmpty. Operand 133384 states and 162891 transitions. [2018-09-10 11:45:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2018-09-10 11:45:02,118 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:45:02,119 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:45:02,119 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:45:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash -162071257, now seen corresponding path program 1 times [2018-09-10 11:45:02,120 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:45:02,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:02,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:02,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:45:02,122 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:45:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 364 proven. 245 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-10 11:45:04,188 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:04,188 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:45:04,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:04,196 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:04,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 619 proven. 2 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-09-10 11:45:04,657 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 357 proven. 78 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2018-09-10 11:45:04,955 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:45:04,956 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:45:04,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:45:04,972 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:45:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:45:05,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:45:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 619 proven. 2 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-09-10 11:45:05,915 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:45:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 357 proven. 78 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2018-09-10 11:45:06,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:45:06,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 20 [2018-09-10 11:45:06,190 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:45:06,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 11:45:06,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 11:45:06,191 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-09-10 11:45:06,191 INFO L87 Difference]: Start difference. First operand 133384 states and 162891 transitions. Second operand 16 states. Received shutdown request... [2018-09-10 11:45:08,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 11:45:08,092 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:45:08,097 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:45:08,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:45:08 BoogieIcfgContainer [2018-09-10 11:45:08,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:45:08,098 INFO L168 Benchmark]: Toolchain (without parser) took 224617.37 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:45:08,099 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 11:45:08,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2366.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:45:08,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 246.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:45:08,101 INFO L168 Benchmark]: Boogie Preprocessor took 849.92 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 922.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. [2018-09-10 11:45:08,102 INFO L168 Benchmark]: RCFGBuilder took 13094.36 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -118.0 MB). Peak memory consumption was 742.2 MB. Max. memory is 7.1 GB. [2018-09-10 11:45:08,103 INFO L168 Benchmark]: TraceAbstraction took 208051.99 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -694.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:45:08,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2366.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 246.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 849.92 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 922.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 128.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13094.36 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 148.4 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -118.0 MB). Peak memory consumption was 742.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208051.99 ms. Allocated memory was 2.6 GB in the beginning and 4.7 GB in the end (delta: 2.1 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -694.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (133384states) and FLOYD_HOARE automaton (currently 11 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (508 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 207.9s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 166.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2933 SDtfs, 45317 SDslu, 2649 SDs, 0 SdLazy, 77397 SolverSat, 14221 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 134.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10558 GetRequests, 10372 SyntacticMatches, 24 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133384occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 13646 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 9279 NumberOfCodeBlocks, 9279 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 14430 ConstructedInterpolants, 0 QuantifiedInterpolants, 37847654 SizeOfPredicates, 24 NumberOfNonLiveVariables, 7918 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 32 InterpolantComputations, 9 PerfectInterpolantSequences, 12347/15105 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-45-08-125.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-45-08-125.csv Completed graceful shutdown